hamblogh



(No Modl.) 2 Sheets-Sheet 1, H. A. HAMBLOOH.

PIANO FORTE PEDAL. No. 478,007. Patented June 28, 1892.

(No Model.) 2 SheetsSheet 2. H. A. HAMBLOGH.

PIANO FORTE PEDAL.

No. 478,007. Patented June 28,- 822.

all Q j z a. ug- Fy4. .B e C m y =1 2? 3 E) b mfln c ATTORNEYS.

UNITED STATES PATENT OFFICE.

HUBERT A. HAMBLOOH, OF NEIV YORK, N. Y., ASSIGNOR TO HAMILTON S. GORDON, 0F SAME PLACE.

PIANO-FORTE PEDAL.

SPECIFICATION forming part of Letters Patent No. 478,007, dated June 28, 1892.

Application filed April 21, 1892.

To all whom it may concern:

Be it known that I, HUBERT A. HAMBLOCH, a citizen of the United States, residing at New York, in the county and State of New York, have invented new and useful Improvements in Piano-Forte Pedals, of which the following is a specification.

This invention relates to an improvement in piano-forte pedals; and by means of this invention swell effects and damper effects, as well as medium effects, can be produced, as set forth in the following specification and claims and illustrated in the annexed drawings, in which Figure 1 is a front elevation of the pedals. Fig. 2 is a section along x :c, Fig. 1. Fig. 3 is a front elevation showing all the pedals raised. Fig. 4 is a section along y y, Fig. 3. Fig. 5 shows the damper-pedal depressed. Fig. 6 is a section along .2 2, Fig. 5. Fig. 7 shows the intermediate or medium pedal depressed. Fig. 8 is a section along to w, Fig. 7. Fig. 9 shows the swell-pedal depressed. Fig. 10 is a section along o 1;, Fig. 9. Fig. 11 is a section along 3 y, Fig. 3. Fig. 12 is a section along .2 2, Fig. 5. Fig. 13 is a section along to w, Fig. 7. Fig. 14: is a section along o 1;, Fig. 9.

In the drawings, the letter A indicates the case of a piano.

The piano indicated is an upright piano; but of course I do not limit the use of my invention to upright pianos.

The swell or loud pedal lever is indicated by B and the damper or soft pedal lever by O. The swell-pedal D is connected by a rod or connection E to the swell-pedal lever B, so

that on depressing pedal D, Figs. 9, 10, and 14, the lever B is actuated. The damper-pedal F, by means of rod or connection G, actuates the damper-pedal lever 0, Figs. 5, 6, and 12. The intermediate or medium pedal H when depressed actuates both the levers B and C, Figs. 7, 8, and 13. The medium pedal II has a rod or connection I, provided with a head K, adapted to lie over or engage both levers B C, so that when the pedal H and rod I are depressed to draw down the head K said head actuates both levers B C. The red I is screwthreaded, Figs. 11 to 14, so that by screwing the head K more or less down on rod I the action of head K on levers B O can be regu- Serial No. 430,106. (No model.)

latedvor adjusted. The head K is shown as acting on the lever B by means of a finger or presser L, which can be adjusted or screwed more or less up or down on head K, so that the action of head K on lever B can be adj usted or regulated by means of finger L. When released, the levers B C are raised by springs M N. The spring for the lever C may be a double spring M M to secure efficient action. The pedals D F H are each shown as having an individual restoring-spring O. A block or stop P is also shown provided for the lever B. The finger L, or rather its striking head or end, as also the stop P and lover O, are preferably provided with the usual pads known in the trade to deaden or soften the impact and prevent noise or rattle. The levers B O transmit their action by suitable rods or connections Q. The rod I of the medium pedal H is shown as passing loosely through the lever C, so that, as seen in Fig. 12, the lever O can be depressed or moved without affecting rod I or head K. The rod I might of course pass along outside or clear of the lever C; but the construction becomes more compact by leading the rod or connection I through the lever O. The various pedals D F H are readily mounted on a common fulcrum It. The medium or intermediate pedal H, actuating both levers B C, will, as is readily perceived, produce a medium effect, intermediate between swell and damper effects of the pedals D F. I have found it of advantage to adjust the medium pedal or its head K so that it actuates the damper or soft lever C only to a fractional part-say about one-halfas compared with the soft-pedal F, so that the damping or softening effect of the medium pedal II will not be as great as that of the soft-pedal.

What I claim as new, and by Letters Patent, is-

1. The combination, with a swell-pedal lever and a damper-pedal lever, of a pedal for each of said levers and a pedal common to both levers, substantially as described.

desire to secure 2. The combination, with a swell-pedal lever and a damper-pedal lever, of a pedal H, having a rod or connection I, provided with a head made to engage or overlie both of said substantially as described.

levers,

3. The combination, with a swell-pedal lever and a damper-pedal lever, of a pedal H, having a rod or connection 1, provided with a head made to engage or overlie both of said levers, said head being adjustably mounted on the rod, substantially as described.

4. The combination, with a swell-pedal lever and a damper-pedal lover, of a pedal H, having a rod or connection I, provided With a head made to engage or overlie both of said levers and having an adjustable finger or presser for engaging one of the lovers, substantially as described.

5. The combination, with a swell-pedal lever and a damper-pedal lever, of a pedal for 

